Students say they were only told Armstrong was seriously injured, but knew something more had happened after seeing other teachers in tears.

According to court documents and letters obtained by FOX8, Laurissa Armstrong attempted to file a domestic violence protective order against her husband on July 29. Guilford County District Court Judge Linda Falls ruled on Aug. 7 "the plaintiff (Laurissa Armstrong) has failed to prove grounds for issuance of a domestic protective order."

Laurissa Armstrong (Credit: Guilford County Schools)

In a letter that was a part of the initial domestic violence protective order hearing, Laurissa Armstrong said her husband showed up at her apartment on June 30.

"I was afraid to let him in, so I talked to him through the door... he has hit and jacked me up in the past, so I feared allowing him into my residence," Laurissa Armstrong wrote.

Laurissa Armstrong said her tires were slashed on July 21 and the screen on her patio was cut.

"I noticed Bruce slowly driving through the parking lot. His behavior was escalating."

In a letter to the court that was also part of the Aug. 7 hearing, Bruce Ray Armstrong wrote:

"I have not intentionally harassed the plaintiff and do not intend to do so... I have sent text messages and emails asking her to forgive me and telling her I still love her, but I stopped when she asked me to not contact her anymore," he wrote.

"I am not a violent person. I did hit the plaintiff and slapped her 30 years ago during a stupid argument... I did grab her by the collar 15-17 years ago, again during a stupid argument over money. Always money."

He continued:

"Every time my son hears about the new male friend or finds out he's at their mother's house, they get upset and I have to calm them down before more issues result."

Police are still interviewing witnesses. No motive has been established.